Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with Juvasonic + Vitali Copper Peptide (GHK Cu) Bundle Not all copper peptide serums are formulated the same Before you buy one, make sure you're actually getting pure GHK Cu at the right concentration not just a diluted blend. We spent 5% Copper Tripeptide GHK Cu + Palmitoyl Tripeptides Togo Ubuy